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Frontend developers often face a common bottleneck: waiting for the backend API to be ready. DoppelAPI solves this by instantly creating a "Digital Twin" of your future backend directly from your OpenAPI (Swagger) definition.
Unlike traditional mock servers that return static, repetitive data, DoppelAPI uses AI-driven data generation to serve realistic, schema-compliant responses (emails, UUIDs, avatars, etc.) on the fly. It feels like interacting with a real production database.
DoppelAPIThe digital twin of your be instant mock server from API
Samet Ucaleft a comment
Hello Product Hunt. I’m Samet, the maker of DoppelAPI. We’ve all been there: The designs are ready, the frontend team is itching to code, but... the backend API isn't built yet. This usually leads to blocking delays, or worse—manually writing massive JSON files and hardcoding fake data (mock: true) all over your codebase. I built DoppelAPI to eliminate this bottleneck once and for all....
DoppelAPIThe digital twin of your be instant mock server from API
Samet Ucastarted a discussion
What's the most annoying part of mocking APIs for you? 😫
Hey everyone I'm Samet, building DoppelAPI to solve the "waiting for backend" problem. As a frontend dev, I've spent countless hours manually writing huge JSON files or hardcoding mock: true flags just to get some UI on the screen while the backend is still being built. I'm curious: How do you currently handle API mocking in your team? Hardcoded JSONs? Postman Mock Servers? Waiting until the...